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Suresh V, West JL. 3D Culture Facilitates VEGF-Stimulated Endothelial Differentiation of Adipose-Derived Stem Cells. Ann Biomed Eng 2019; 48:1034-1044. [PMID: 31165294 DOI: 10.1007/s10439-019-02297-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 05/25/2019] [Indexed: 01/15/2023]
Abstract
De novo vascularization of implantable tissue and whole organ constructs has been a significant challenge in the field of tissue engineering; the use of endothelial cell populations for this task is constrained by the cell population's limited regeneration capacity and potential for loss of function. Thus, there is a need for a stem-cell population that may be induced into an endothelial cell phenotype reliably. Adipose derived stem cells (ADSCs) are multipotent cells that can be readily isolated from donor fat and may have the potential to be readily induced into endothelial cells. The ability to stimulate endothelial differentiation of these cells has been limited in standard 2D culture. We hypothesized that 3D culture would yield better differentiation. To study the influence of cell density and culture conditions on the potential of ADSCs to differentiate into an endothelial-like state, we seeded these cells types within a 3D cell-adhesive, proteolytically degradable, peptide-modified poly(ethylene-glycol) (PEG) hydrogel. ADSCs were either cultured in basal media or pro-angiogenic media supplemented with 20 ng/mL of VEGF in 2D and then encapsulated at low or high densities within the PEG-based hydrogel. These encapsulated cells were maintained in either basal media or pro-angiogenic media. Cells were then isolated from the hydrogels and cultured in Matrigel to assess the potential for tubule formation. Our work shows that maintenance of ADSCs in a pro-angiogenic medium in 2D monoculture alone does not result in any CD31 expression. Furthermore, the level of CD31 expression was affected by the density of the cells encapsulated within the PEG-based hydrogel. Upon isolation of these cells, we found that these induced ADSCs were able to form tubules within Matrigel, indicative of endothelial function, while ADSCs cultured in basal medium could not. This finding points to the potential for this stem-cell population to serve as a safe and reliable source of endothelial cells for tissue engineering and regenerative medicine purposes.
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Affiliation(s)
- V Suresh
- Duke University School of Medicine, DUMC 3878, Durham, NC, 27710, USA
| | - J L West
- Department of Biomedical Engineering, Duke University, Box 90281, Durham, NC, 27708, USA.
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da Silva LP, Reis RL, Correlo VM, Marques AP. Hydrogel-Based Strategies to Advance Therapies for Chronic Skin Wounds. Annu Rev Biomed Eng 2019; 21:145-169. [DOI: 10.1146/annurev-bioeng-060418-052422] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Chronic skin wounds are the leading cause of nontraumatic foot amputations worldwide and present a significant risk of morbidity and mortality due to the lack of efficient therapies. The intrinsic characteristics of hydrogels allow them to benefit cutaneous healing essentially by supporting a moist environment. This property has long been explored in wound management to aid in autolytic debridement. However, chronic wounds require additional therapeutic features that can be provided by a combination of hydrogels with biochemical mediators or cells, promoting faster and better healing. We survey hydrogel-based approaches with potential to improve the healing of chronic wounds by reviewing their effects as observed in preclinical models. Topics covered include strategies to ablate infection and resolve inflammation, the delivery of bioactive agents to accelerate healing, and tissue engineering approaches for skin regeneration. The article concludes by considering the relevance of treating chronic skin wounds using hydrogel-based strategies.
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Affiliation(s)
- Lucília P. da Silva
- 3B's Research Group, I3B's: Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, and Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, 4805-017 Barco, Guimarães, Portugal;, , ,
- ICVS/3B's: PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
| | - Rui L. Reis
- 3B's Research Group, I3B's: Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, and Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, 4805-017 Barco, Guimarães, Portugal;, , ,
- ICVS/3B's: PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
- Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, 4805-017 Barco, Guimarães, Portugal
| | - Vitor M. Correlo
- 3B's Research Group, I3B's: Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, and Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, 4805-017 Barco, Guimarães, Portugal;, , ,
- ICVS/3B's: PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
- Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, 4805-017 Barco, Guimarães, Portugal
| | - Alexandra P. Marques
- 3B's Research Group, I3B's: Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, and Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, 4805-017 Barco, Guimarães, Portugal;, , ,
- ICVS/3B's: PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
- Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, 4805-017 Barco, Guimarães, Portugal
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53
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Browne S, Healy KE. Matrix-assisted cell transplantation for tissue vascularization. Adv Drug Deliv Rev 2019; 146:155-169. [PMID: 30605738 DOI: 10.1016/j.addr.2018.12.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 10/30/2018] [Accepted: 12/27/2018] [Indexed: 12/20/2022]
Abstract
Cell therapy offers much promise for the treatment of ischemic diseases by augmenting tissue vasculogenesis. Matrix-assisted cell transplantation (MACT) has been proposed as a solution to enhance cell survival and integration with host tissue following transplantation. By designing semi synthetic matrices (sECM) with the correct physical and biochemical signals, encapsulated cells are directed towards a more angiogenic phenotype. In this review, we describe the choice of cells suitable for pro-angiogenic therapies, the properties that should be considered when designing sECM for transplantation and their relative importance. Pre-clinical models where MACT has been successfully applied to promote angiogenesis are reviewed to show the great potential of this strategy to treat ischemic conditions.
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Affiliation(s)
- Shane Browne
- Department of Bioengineering, University of California, Berkeley, CA 94720, USA; Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA; Centre for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
| | - Kevin E Healy
- Department of Bioengineering, University of California, Berkeley, CA 94720, USA; Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA.
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54
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Shauly O, Gould DJ, Patel KM. Microtexture and the Cell/Biomaterial Interface: A Systematic Review and Meta-Analysis of Capsular Contracture and Prosthetic Breast Implants. Aesthet Surg J 2019; 39:603-614. [PMID: 30124780 DOI: 10.1093/asj/sjy178] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The use of textured breast implants over smooth implants has been widely shown to have a lower incidence of capsular contracture. However, the impact of micropatterning techniques on the incidence of postoperative patient morbidity has not been comprehensively investigated. OBJECTIVES The authors sought to examine the incidence of capsular contracture, seroma, and implant rippling among the 3 major micropatterning techniques applied in the manufacturing of textured breast implants. METHODS Literature searches of PubMed/Medline and Embase between 1995 and 2017 were performed, and 19 studies were selected for analysis. Data from each study were extracted into a form including mean age, study design, population size, mean follow-up, number of capsular contracture cases, number of seroma cases, and number of rippling cases. Meta-analysis was performed separately for studies that included capsular contracture rates for foam textured implants, imprinted textured implants, and salt-loss textured implants. RESULTS The pooled rate of capsular contracture rates in primary augmentation patients was 3.80% (95% CI, 2.19-5.40) for imprinted textured implants, 4.90% (95% CI, 3.16-6.64) for foam textured implants, 5.27% (95% CI, 3.22-7.31) for salt-loss textured implants, and 15.56% (95% CI, 13.31-18.16) for smooth implants. The results of each meta-analysis were summarized on a forest plot depicting the distribution of capsular contracture rates from each study. CONCLUSIONS Micropatterning of prosthetic implants could drastically reduce postoperative patient morbidity given the advent of recent technologies that allow for more detailed texturing of implant surfaces. LEVEL OF EVIDENCE: 4
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Affiliation(s)
- Orr Shauly
- University of Southern California, Los Angeles, CA
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55
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Su J, Satchell SC, Wertheim JA, Shah RN. Poly(ethylene glycol)-crosslinked gelatin hydrogel substrates with conjugated bioactive peptides influence endothelial cell behavior. Biomaterials 2019; 201:99-112. [PMID: 30807988 PMCID: PMC6777960 DOI: 10.1016/j.biomaterials.2019.02.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 12/28/2022]
Abstract
The basement membrane is a specialized extracellular matrix substrate responsible for support and maintenance of epithelial and endothelial structures. Engineered basement membrane-like hydrogel systems have the potential to advance understanding of cell-cell and cell-matrix interactions by allowing precise tuning of the substrate or matrix biochemical and biophysical properties. In this investigation, we developed tunable hydrogel substrates with conjugated bioactive peptides to modulate cell binding and growth factor signaling by endothelial cells. Hydrogels were formed by employing a poly(ethylene glycol) crosslinker to covalently crosslink gelatin polymers and simultaneously conjugate laminin-derived YIGSR peptides or vascular endothelial growth factor (VEGF)-mimetic QK peptides to the gelatin. Rheological characterization revealed rapid formation of hydrogels with similar stiffnesses across tested formulations, and swelling analysis demonstrated dependency on peptide and crosslinker concentrations in hydrogels. Levels of phosphorylated VEGF Receptor 2 in cells cultured on hydrogel substrates revealed that while human umbilical vein endothelial cells (HUVECs) responded to both soluble and conjugated forms of the QK peptide, conditionally-immortalized human glomerular endothelial cells (GEnCs) only responded to the conjugated presentation of the peptide. Furthermore, whereas HUVECs exhibited greatest upregulation in gene expression when cultured on YIGSR- and QK-conjugated hydrogel substrates after 5 days, GEnCs exhibited greatest upregulation when cultured on Matrigel control substrates at the same time point. These results indicate that conjugation of bioactive peptides to these hydrogel substrates significantly influenced endothelial cell behavior in cultures but with differential responses between HUVECs and GEnCs.
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Affiliation(s)
- Jimmy Su
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA; Simpson Querrey Institute, Northwestern University, Chicago, IL, USA; Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Simon C Satchell
- Bristol Renal, University of Bristol, Dorothy Hodgkin Building, Bristol, United Kingdom
| | - Jason A Wertheim
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA; Simpson Querrey Institute, Northwestern University, Chicago, IL, USA; Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA; Department of Surgery, Jesse Brown VA Medical Center, Chicago, IL, USA.
| | - Ramille N Shah
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA; Simpson Querrey Institute, Northwestern University, Chicago, IL, USA; Department of Bioengineering, University of Illinois at Chicago, Chicago, IL, USA.
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56
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Anderson DEJ, Truong KP, Hagen MW, Yim EKF, Hinds MT. Biomimetic modification of poly(vinyl alcohol): Encouraging endothelialization and preventing thrombosis with antiplatelet monotherapy. Acta Biomater 2019; 86:291-299. [PMID: 30639349 DOI: 10.1016/j.actbio.2019.01.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 12/17/2018] [Accepted: 01/09/2019] [Indexed: 01/04/2023]
Abstract
Poly(vinyl alcohol) (PVA) has shown promise as a biomaterial for cardiovascular application. However, its antifouling properties prevent in vivo endothelialization. This work examined the endothelialization and thrombogenicity of modified PVA with different concentrations of proteins and adhesion peptides: collagen, laminin, fibronectin, GFPGER, YIGSR, and cRGD. Material surface properties were quantified, and the endothelialization potential was determined with human endothelial colony forming cells. Additionally, platelet attachment was assessed in vitro with human platelet rich plasma, and promising samples were tested in an ex vivo shunt model. This well-established arteriovenous shunt model was used with and without clinically-relevant antiplatelet therapies, specifically acetylsalicylic acid (ASA) with and without clopidogrel to examine the minimum necessary treatment to prevent thrombosis. Collagen, laminin, and GFPGER biomolecules increased endothelialization, with GFPGER showing the greatest effect at the lowest concentrations. GFPGER-PVA tubes tested under whole blood did exhibit an increase in platelet (but not fibrin) attachment compared to plain PVA and clinical controls. However, application of ASA monotherapy reduced the thrombogenicity of GFPGER-PVA below the clinical control with the ASA. This work is significant in developing cardiovascular biomaterials-increasing endothelialization potential while reducing bleeding side effects by using an antiplatelet monotherapy, typical of clinical patients. STATEMENT OF SIGNIFICANCE: We modified the endothelialization potential of synthetic, hydrogel vascular grafts with proteins and peptides of the vascular tissue matrix. Cell attachment was dramatically increased with the GFPGER peptide, and while some additional platelet attachment was seen under flow with whole blood, this was completely knocked down using clinical antiplatelet monotherapy. This indicates that long-term patency of this biomaterial could be improved without the associated bleeding risk of multiple platelet therapies.
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Affiliation(s)
- Deirdre E J Anderson
- Department of Biomedical Engineering, Oregon Health & Science University, 3303 SW Bond Ave., Portland, OR 97239, USA
| | - Katie P Truong
- Department of Biomedical Engineering, Oregon Health & Science University, 3303 SW Bond Ave., Portland, OR 97239, USA
| | - Matthew W Hagen
- Department of Biomedical Engineering, Oregon Health & Science University, 3303 SW Bond Ave., Portland, OR 97239, USA
| | - Evelyn K F Yim
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON N2L3G1, Canada
| | - Monica T Hinds
- Department of Biomedical Engineering, Oregon Health & Science University, 3303 SW Bond Ave., Portland, OR 97239, USA.
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57
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Sawicki LA, Ovadia EM, Pradhan L, Cowart JE, Ross KE, Wu CH, Kloxin AM. Tunable synthetic extracellular matrices to investigate breast cancer response to biophysical and biochemical cues. APL Bioeng 2019; 3:016101. [PMID: 31069334 PMCID: PMC6481819 DOI: 10.1063/1.5064596] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 01/15/2019] [Indexed: 01/28/2023] Open
Abstract
The extracellular matrix (ECM) is thought to play a critical role in the progression of breast cancer. In this work, we have designed a photopolymerizable, biomimetic synthetic matrix for the controlled, 3D culture of breast cancer cells and, in combination with imaging and bioinformatics tools, utilized this system to investigate the breast cancer cell response to different matrix cues. Specifically, hydrogel-based matrices of different densities and modified with receptor-binding peptides derived from ECM proteins [fibronectin/vitronectin (RGDS), collagen (GFOGER), and laminin (IKVAV)] were synthesized to mimic key aspects of the ECM of different soft tissue sites. To assess the breast cancer cell response, the morphology and growth of breast cancer cells (MDA-MB-231 and T47D) were monitored in three dimensions over time, and differences in their transcriptome were assayed using next generation sequencing. We observed increased growth in response to GFOGER and RGDS, whether individually or in combination with IKVAV, where binding of integrin β1 was key. Importantly, in matrices with GFOGER, increased growth was observed with increasing matrix density for MDA-MB-231s. Further, transcriptomic analyses revealed increased gene expression and enrichment of biological processes associated with cell-matrix interactions, proliferation, and motility in matrices rich in GFOGER relative to IKVAV. In sum, a new approach for investigating breast cancer cell-matrix interactions was established with insights into how microenvironments rich in collagen promote breast cancer growth, a hallmark of disease progression in vivo, with opportunities for future investigations that harness the multidimensional property control afforded by this photopolymerizable system.
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Affiliation(s)
- Lisa A. Sawicki
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA
| | - Elisa M. Ovadia
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA
| | - Lina Pradhan
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA
| | - Julie E. Cowart
- Center for Bioinformatics and Computational Biology, University of Delaware, Newark, Delaware 19711, USA
| | - Karen E. Ross
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Cathy H. Wu
- Center for Bioinformatics and Computational Biology, University of Delaware, Newark, Delaware 19711, USA
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Crosby CO, Zoldan J. Mimicking the physical cues of the ECM in angiogenic biomaterials. Regen Biomater 2019; 6:61-73. [PMID: 30967961 PMCID: PMC6447000 DOI: 10.1093/rb/rbz003] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 12/02/2018] [Accepted: 12/29/2018] [Indexed: 12/12/2022] Open
Abstract
A functional microvascular system is imperative to build and maintain healthy tissue. Impaired microvasculature results in ischemia, thereby limiting the tissue's intrinsic regeneration capacity. Therefore, the ability to regenerate microvascular networks is key to the development of effective cardiovascular therapies. To stimulate the formation of new microvasculature, researchers have focused on fabricating materials that mimic the angiogenic properties of the native extracellular matrix (ECM). Here, we will review biomaterials that seek to imitate the physical cues that are natively provided by the ECM to encourage the formation of microvasculature in engineered constructs and ischemic tissue in the body.
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Affiliation(s)
- Cody O Crosby
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Janet Zoldan
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
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59
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Surface-attached dual-functional hydrogel for controlled cell adhesion based on poly(N,N-dimethylacrylamide). JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1728-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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60
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Munisso MC, Yamaoka T. Peptide with endothelial cell affinity and antiplatelet adhesion property to improve hemocompatibility of blood‐contacting biomaterials. Pept Sci (Hoboken) 2019. [DOI: 10.1002/pep2.24114] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Maria Chiara Munisso
- Department of Biomedical EngineeringNational Cerebral and Cardiovascular Center Research Institute Suita Osaka Japan
| | - Tetsuji Yamaoka
- Department of Biomedical EngineeringNational Cerebral and Cardiovascular Center Research Institute Suita Osaka Japan
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61
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Patel R, Santhosh M, Dash JK, Karpoormath R, Jha A, Kwak J, Patel M, Kim JH. Ile-Lys-Val-ala-Val (IKVAV) peptide for neuronal tissue engineering. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4442] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Rajkumar Patel
- Energy and Environmental Science and Engineering, Integrated Science and Engineering Division (ISED), Underwood International College; Yonsei University; 85 Songdogwahak-ro, Yeonsu-gu Incheon South Korea 21983
| | - Mallesh Santhosh
- Department of Biosciences and Bioengineering; Indian Institute of Technology Guwahati; Guwahati 781039 Assam India
| | - Jatis Kumar Dash
- Department of Physics; SRM University-AP; Amaravati 522502 Guntur India
| | - Rajshekhar Karpoormath
- Department of Pharmaceutical Chemistry, College of Health Sciences; University of Kwa Zulu Natal; Durban 4000 South Africa
| | - Amitabh Jha
- Department of Chemistry; Acadia University; Wolfville NS Canada
| | - Jeonghun Kwak
- School of Electrical and Computer Engineering; The University of Seoul; Seoul 02504 South Korea
| | - Madhumita Patel
- Department of Chemistry and Nano Science; Ewha Womans University; Seodaemungu Seoul 120-750 South Korea
| | - Jong Hak Kim
- Department of Chemical and Biomolecular Engineering; Yonsei University; 50 Yonsei-ro, Seodaemun-gu Seoul 03722 South Korea
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Adipose-Derived Stem Cells Can Contribute to Vascular Network Formation in Poly(ethylene Glycol) Hydrogel Scaffolds. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2018. [DOI: 10.1007/s40883-018-0075-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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63
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Bioactive Poly(ethylene Glycol) Acrylate Hydrogels for Regenerative Engineering. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2018. [DOI: 10.1007/s40883-018-0074-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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64
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Nguyen EH, Murphy WL. Customizable biomaterials as tools for advanced anti-angiogenic drug discovery. Biomaterials 2018; 181:53-66. [PMID: 30077137 DOI: 10.1016/j.biomaterials.2018.07.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 07/17/2018] [Accepted: 07/25/2018] [Indexed: 12/12/2022]
Abstract
The inhibition of angiogenesis is a critical element of cancer therapy, as cancer vasculature contributes to tumor expansion. While numerous drugs have proven to be effective at disrupting cancer vasculature, patient survival has not significantly improved as a result of anti-angiogenic drug treatment. Emerging evidence suggests that this is due to a combination of unintended side effects resulting from the application of anti-angiogenic compounds, including angiogenic rebound after treatment and the activation of metastasis in the tumor. There is currently a need to better understand the far-reaching effects of anti-angiogenic drug treatments in the context of cancer. Numerous innovations and discoveries in biomaterials design and tissue engineering techniques are providing investigators with tools to develop physiologically relevant vascular models and gain insights into the holistic impact of drug treatments on tumors. This review examines recent advances in the design of pro-angiogenic biomaterials, specifically in controlling integrin-mediated cell adhesion, growth factor signaling, mechanical properties and oxygen tension, as well as the implementation of pro-angiogenic materials into sophisticated co-culture models of cancer vasculature.
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Affiliation(s)
- Eric H Nguyen
- Department of Biomedical Engineering, University of Wisconsin, Madison, WI, USA; Human Models for Analysis of Pathways (Human MAPs) Center, University of Wisconsin, Madison, WI, USA; Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.
| | - William L Murphy
- Department of Biomedical Engineering, University of Wisconsin, Madison, WI, USA; Human Models for Analysis of Pathways (Human MAPs) Center, University of Wisconsin, Madison, WI, USA; Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.
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65
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Borges FTP, Papavasiliou G, Murad S, Teymour F. Effect of Phosphate Salt Concentration and Solution pH on the Aqueous-Phase Homo and Copolymerization of N
-Vinyl Pyrrolidone. MACROMOL REACT ENG 2018. [DOI: 10.1002/mren.201800012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Fernando T. P. Borges
- Department of Chemical and Biological Engineering; Illinois Institute of Technology; Chicago IL 60616 USA
| | - Georgia Papavasiliou
- Department of Biomedical Engineering; Illinois Institute of Technology; Chicago IL 60616 USA
| | - Sohail Murad
- Department of Chemical and Biological Engineering; Illinois Institute of Technology; Chicago IL 60616 USA
| | - Fouad Teymour
- Department of Chemical and Biological Engineering; Illinois Institute of Technology; Chicago IL 60616 USA
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66
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Lim HJ, Khan Z, Lu X, Perera TH, Wilems TS, Ravivarapu KT, Smith Callahan LA. Mechanical stabilization of proteolytically degradable polyethylene glycol dimethacrylate hydrogels through peptide interaction. Acta Biomater 2018. [PMID: 29526829 DOI: 10.1016/j.actbio.2018.03.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Balancing enhancement of neurite extension against loss of matrix support in synthetic hydrogels containing proteolytically degradable and bioactive signaling peptides to optimize tissue formation is difficult. Using a systematic approach, polyethylene glycol hydrogels containing concurrent continuous concentration gradients of the laminin derived bioactive signaling peptide, Ile-Lys-Val-Ala-Val (IKVAV), and collagen derived matrix metalloprotease degradable peptide, GPQGIWGQ, were fabricated and characterized. During proteolytic degradation of the concentration gradient hydrogels, the IKVAV and IWGQ cleavage fragment from GPQGIWGQ were found to interact and stabilize the bulk Young's Modulus of the hydrogel. Further testing of discrete samples containing GPQGIWGQ or its cleavage fragments, GPQG and IWGQ, indicates hydrophobic interactions between the peptides are not necessary for mechanical stabilization of the hydrogel, but changes in the concentration ratio between the peptides tethered in the hydrogel and salts and ions in the swelling solution can affect the stabilization. Encapsulation of human induced pluripotent stem cell derived neural stem cells did not reduce the mechanical properties of the hydrogel over a 14 day neural differentiation culture period, and IKVAV was found to maintain concentration dependent effects on neurite extension and mRNA gene expression of neural cytoskeletal markers, similar to previous studies. As a result, this work has significant implications for the analysis of biological studies in matrices, as the material and mechanical properties of the hydrogel may be unexpectedly temporally changing during culture due to interactions between peptide signaling elements, underscoring the need for greater matrix characterization during the degradation and cell culture. STATEMENT OF SIGNIFICANCE Greater emulation of the native extracellular matrix is necessary for tissue formation. To achieve this, matrices are becoming more complex, often including multiple bioactive signaling elements. However, peptide signaling in polyethylene glycol matrices and amino acids interactions between peptides can affect hydrogel material and mechanical properties, but are rarely studied. The current study identifies such an interaction between laminin derived peptide, IKVAV, and collagen derived matrix metalloprotease degradable peptide, GPQGIWGQ. Previous studies using these peptides did not identify their interactions' ability to mechanically stabilize the hydrogel during degradation. This work underscores the need for greater matrix characterization and consideration of bioactive signaling element effects temporally on the matrix's material and mechanical properties, as they can contribute to cellular response.
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Affiliation(s)
- Hyun Ju Lim
- The Vivian L Smith Department of Neurosurgery, McGovern Medical School at the University of Texas Health Science Center at Houston, United States; Center for Stem Cell and Regenerative Medicine, The Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases, McGovern Medical School at the University of Texas Health Science Center at Houston, United States
| | - Zara Khan
- The Vivian L Smith Department of Neurosurgery, McGovern Medical School at the University of Texas Health Science Center at Houston, United States; Center for Stem Cell and Regenerative Medicine, The Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases, McGovern Medical School at the University of Texas Health Science Center at Houston, United States
| | - Xi Lu
- The Vivian L Smith Department of Neurosurgery, McGovern Medical School at the University of Texas Health Science Center at Houston, United States; Center for Stem Cell and Regenerative Medicine, The Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases, McGovern Medical School at the University of Texas Health Science Center at Houston, United States
| | - T Hiran Perera
- The Vivian L Smith Department of Neurosurgery, McGovern Medical School at the University of Texas Health Science Center at Houston, United States; Center for Stem Cell and Regenerative Medicine, The Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases, McGovern Medical School at the University of Texas Health Science Center at Houston, United States
| | - Thomas S Wilems
- The Vivian L Smith Department of Neurosurgery, McGovern Medical School at the University of Texas Health Science Center at Houston, United States; Center for Stem Cell and Regenerative Medicine, The Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases, McGovern Medical School at the University of Texas Health Science Center at Houston, United States
| | - Krishna T Ravivarapu
- The Vivian L Smith Department of Neurosurgery, McGovern Medical School at the University of Texas Health Science Center at Houston, United States; Center for Stem Cell and Regenerative Medicine, The Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases, McGovern Medical School at the University of Texas Health Science Center at Houston, United States
| | - Laura A Smith Callahan
- The Vivian L Smith Department of Neurosurgery, McGovern Medical School at the University of Texas Health Science Center at Houston, United States; Center for Stem Cell and Regenerative Medicine, The Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases, McGovern Medical School at the University of Texas Health Science Center at Houston, United States; The Department of Nanomedicine and Biomedical Engineering, McGovern Medical School at the University of Texas Health Science Center at Houston, United States; The MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, University of Texas Health Science Center at Houston, United States.
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Foyt DA, Norman MDA, Yu TTL, Gentleman E. Exploiting Advanced Hydrogel Technologies to Address Key Challenges in Regenerative Medicine. Adv Healthc Mater 2018; 7:e1700939. [PMID: 29316363 PMCID: PMC5922416 DOI: 10.1002/adhm.201700939] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/24/2017] [Indexed: 12/16/2022]
Abstract
Regenerative medicine aims to tackle a panoply of challenges from repairing focal damage to articular cartilage to preventing pathological tissue remodeling after myocardial infarction. Hydrogels are water-swollen networks formed from synthetic or naturally derived polymers and are emerging as important tools to address these challenges. Recent advances in hydrogel chemistries are enabling researchers to create hydrogels that can act as 3D ex vivo tissue models, allowing them to explore fundamental questions in cell biology by replicating tissues' dynamic and nonlinear physical properties. Enabled by cutting edge techniques such as 3D bioprinting, cell-laden hydrogels are also being developed with highly controlled tissue-specific architectures, vasculature, and biological functions that together can direct tissue repair. Moreover, advanced in situ forming and acellular hydrogels are increasingly finding use as delivery vehicles for bioactive compounds and in mediating host cell response. Here, advances in the design and fabrication of hydrogels for regenerative medicine are reviewed. It is also addressed how controlled chemistries are allowing for precise engineering of spatial and time-dependent properties in hydrogels with a look to how these materials will eventually translate to clinical applications.
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Affiliation(s)
- Daniel A. Foyt
- Centre for Craniofacial and Regenerative BiologyKing's College LondonLondonSE1 9RTUK
| | - Michael D. A. Norman
- Centre for Craniofacial and Regenerative BiologyKing's College LondonLondonSE1 9RTUK
| | - Tracy T. L. Yu
- Centre for Craniofacial and Regenerative BiologyKing's College LondonLondonSE1 9RTUK
| | - Eileen Gentleman
- Centre for Craniofacial and Regenerative BiologyKing's College LondonLondonSE1 9RTUK
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M0 and M2 Macrophages Enhance Vascularization of Tissue Engineering Scaffolds. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2018. [DOI: 10.1007/s40883-018-0048-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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69
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da Silva LP, Jha AK, Correlo VM, Marques AP, Reis RL, Healy KE. Gellan Gum Hydrogels with Enzyme-Sensitive Biodegradation and Endothelial Cell Biorecognition Sites. Adv Healthc Mater 2018; 7. [PMID: 29388392 DOI: 10.1002/adhm.201700686] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 12/04/2017] [Indexed: 12/13/2022]
Abstract
The survival of a biomaterial or tissue engineered construct is mainly hampered by the deficient microcirculation in its core, and limited nutrients and oxygen availability to the implanted or colonizing host cells. Aiming to address these issues, we herein propose bioresponsive gellan gum (GG) hydrogels that are biodegradable by metalloproteinase 1 (MMP-1) and enable endothelial cells adhesion and proliferation. GG is chemically functionalized with divinyl sulfone (DVS) and then biofunctionalized with thiol cell-adhesive peptides (T1 or C16) to confer GG endothelial cell biorecognition cues. Biodegradable hydrogels are then formed by Michael type addition of GGDVS or/and peptide-functionalized GGDVS with a dithiol peptide crosslinker sensitive to MMP-1. The mechanical properties (6 to 5580 Pa), swelling (17 to 11), MMP-1-driven degradation (up to 70%), and molecules diffusion coefficients of hydrogels are tuned by increasing the polymer amount and crosslinking density. Human umbilical cord vein endothelial cells depict a polarized elongated morphology when encapsulated within T1-containing hydrogels, in contrast to the round morphology observed in C16-containing hydrogels. Cell organization is favored as early as 1 d of cell culture within the T1-modified hydrogels with higher concentration of peptide, while cell proliferation is higher in T1-modified hydrogels with higher modulus. In conclusion, biodegradable and bioresponsive GGDVS hydrogels are promising endothelial cell responsive materials that can be used for vascularization strategies.
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Affiliation(s)
- Lucília P. da Silva
- 3B's Research Group - Biomaterials; Biodegradables and Biomimetics; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; University of Minho; Avepark Barco 4805-017 Guimarães Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães 4710-057/4806-909 Portugal
- Department of Bioengineering; University of California; Berkeley CA 94720-1762 USA
- Department of Materials Science and Engineering; University of California; Berkeley CA 94720-1760 USA
| | - Amit K. Jha
- Department of Bioengineering; University of California; Berkeley CA 94720-1762 USA
- Department of Materials Science and Engineering; University of California; Berkeley CA 94720-1760 USA
| | - Vitor M. Correlo
- 3B's Research Group - Biomaterials; Biodegradables and Biomimetics; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; University of Minho; Avepark Barco 4805-017 Guimarães Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães 4710-057/4806-909 Portugal
- The Discoveries Centre for Regenerative and Precision Medicine; Headquarters at University of Minho; Avepark, Barco 4805-017 Guimarães Portugal
| | - Alexandra P. Marques
- 3B's Research Group - Biomaterials; Biodegradables and Biomimetics; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; University of Minho; Avepark Barco 4805-017 Guimarães Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães 4710-057/4806-909 Portugal
- The Discoveries Centre for Regenerative and Precision Medicine; Headquarters at University of Minho; Avepark, Barco 4805-017 Guimarães Portugal
| | - Rui L. Reis
- 3B's Research Group - Biomaterials; Biodegradables and Biomimetics; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; University of Minho; Avepark Barco 4805-017 Guimarães Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães 4710-057/4806-909 Portugal
- The Discoveries Centre for Regenerative and Precision Medicine; Headquarters at University of Minho; Avepark, Barco 4805-017 Guimarães Portugal
| | - Kevin E. Healy
- Department of Bioengineering; University of California; Berkeley CA 94720-1762 USA
- Department of Materials Science and Engineering; University of California; Berkeley CA 94720-1760 USA
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3D Co-Culture with Vascular Cells Supports Long-Term Hepatocyte Phenotype and Function In Vitro. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2018. [DOI: 10.1007/s40883-018-0046-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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71
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Llacua LA, de Haan BJ, de Vos P. Laminin and collagen IV inclusion in immunoisolating microcapsules reduces cytokine-mediated cell death in human pancreatic islets. J Tissue Eng Regen Med 2017; 12:460-467. [PMID: 28508555 DOI: 10.1002/term.2472] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 04/05/2017] [Accepted: 05/09/2017] [Indexed: 12/21/2022]
Abstract
Extracellular matrix (ECM) molecules have several functions in pancreatic islets, including provision of mechanical support and prevention of cytotoxicity during inflammation. During islet isolation, ECM connections are damaged, and are not restored after encapsulation and transplantation. Inclusion of specific combinations of collagen type IV and laminins in immunoisolating capsules can enhance survival of pancreatic islets. Here we investigated whether ECM can also enhance survival and lower susceptibility of human islets to cytokine-mediated cytotoxicity. To this end, human islets were encapsulated in alginate with collagen IV and either RGD, LRE or PDSGR, i.e. laminin sequences. Islets in capsules without ECM served as control. The encapsulated islets were exposed to IL-1β, IFN-γ and TNF-α for 24 and 72 h. All combinations of ECM improved the islet cell survival, and reduced necrosis and apoptosis after cytokine exposure (P < 0.01). Collagen IV-RGD and collagen IV-LRE reduced danger-associated molecular patterns (DAMPs) release from islets (P < 0.05). Moreover, collagen IV-RGD and collagen IV-PDSGR, but not collagen IV-LRE, reduced NO release from encapsulated human islets (P < 0.05). This reduction correlated with a higher oxygen consumption rate (OCR) of islets in capsules containing collagen IV-RGD and collagen IV-PDSGR. Islets in capsules with collagen IV-LRE showed more dysfunction, and OCR was not different from islets in control capsules without ECM. Our study demonstrates that incorporation of specific ECM molecules such as collagen type IV with the laminin sequences RGD and PDSGR in immunoisolated islets can protect against cytokine toxicity.
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Affiliation(s)
- L Alberto Llacua
- Immunoendocrinology, Department of Pathology and Medical Biology, University of Groningen and University Medical Center Groningen, RB, Groningen, The Netherlands
| | - Bart J de Haan
- Immunoendocrinology, Department of Pathology and Medical Biology, University of Groningen and University Medical Center Groningen, RB, Groningen, The Netherlands
| | - Paul de Vos
- Immunoendocrinology, Department of Pathology and Medical Biology, University of Groningen and University Medical Center Groningen, RB, Groningen, The Netherlands
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72
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Zhuang Y, Gong YJ, Zhong BF, Zhou Y, Gong L. Bioinformatics method identifies potential biomarkers of dilated cardiomyopathy in a human induced pluripotent stem cell-derived cardiomyocyte model. Exp Ther Med 2017; 14:2771-2778. [PMID: 28912841 DOI: 10.3892/etm.2017.4850] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 02/10/2017] [Indexed: 12/23/2022] Open
Abstract
Dilated cardiomyopathy (DCM) is the most common type of cardiomyopathy that account for the majority of heart failure cases. The present study aimed to reveal the underlying molecular mechanisms of DCM and provide potential biomarkers for detection of this condition. The public dataset of GSE35108 was downloaded, and 4 normal induced pluripotent stem cell (iPSC)-derived cardiomyocytes (N samples) and 4 DCM iPSC-derived cardiomyocytes (DCM samples) were utilized. Raw data were preprocessed, followed by identification of differentially expressed genes (DEGs) between N and DCM samples. Crucial functions and pathway enrichment analysis of DEGs were investigated, and protein-protein interaction (PPI) network analysis was conducted. Furthermore, a module network was extracted from the PPI network, followed by enrichment analysis. A set of 363 DEGs were identified, including 253 upregulated and 110 downregulated genes. Several biological processes (BPs), such as blood vessel development and vasculature development (FLT1 and MMP2), cell adhesion (CDH1, ITGB6, COL6A3, COL6A1 and LAMC2) and extracellular matrix (ECM)-receptor interaction pathway (CDH1, ITGB6, COL6A3, COL6A1 and LAMC2), were significantly enriched by these DEGs. Among them, MMP2, CDH1 and FLT1 were hub nodes in the PPI network, while COL6A3, COL6A1, LAMC2 and ITGB6 were highlighted in module 3 network. In addition, PENK and APLNR were two crucial nodes in module 2, which were linked to each other. In conclusion, several potential biomarkers for DCM were identified, such as MMP2, FLT1, CDH1, ITGB6, COL6A3, COL6A1, LAMC2, PENK and APLNR. These genes may serve significant roles in DCM via involvement of various BPs, such as blood vessel and vasculature development and cell adhesion, and the ECM-receptor interaction pathway.
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Affiliation(s)
- Yu Zhuang
- Department of Cardiovascular Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
| | - Yu-Jia Gong
- Stomatology Faculty, School of Medicine, Nantong University, Nantong, Jiangsu 226000, P.R. China
| | - Bei-Fen Zhong
- Department of Urology, Shanghai First People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
| | - Yi Zhou
- Department of Cardiovascular Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
| | - Li Gong
- Department of Cardiothoracic Surgery, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu 223002, P.R. China
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74
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Schweller RM, Wu ZJ, Klitzman B, West JL. Stiffness of Protease Sensitive and Cell Adhesive PEG Hydrogels Promotes Neovascularization In Vivo. Ann Biomed Eng 2017; 45:1387-1398. [PMID: 28361182 DOI: 10.1007/s10439-017-1822-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 03/15/2017] [Indexed: 01/10/2023]
Abstract
Materials that support the assembly of new vasculature are critical for regenerative medicine. Controlling the scaffold's mechanical properties may help to optimize neovascularization within implanted biomaterials. However, reducing the stiffness of synthetic hydrogels usually requires decreasing polymer densities or increasing chain lengths, both of which accelerate degradation. We synthesized enzymatically-degradable poly(ethylene glycol) hydrogels with compressive moduli from 2 to 18 kPa at constant polymer density, chain length, and proteolytic degradability by inserting an allyloxycarbonyl functionality into the polymer backbone. This group competes with acrylates during photopolymerization to alter the crosslink network structure and reduce the hydrogel's stiffness. Hydrogels that incorporated (soft) or lacked (stiff) this group were implanted subcutaneously in rats to investigate the role of stiffness on host tissue interactions. Changes in tissue integration were quantified after 4 weeks via the hydrogel area replaced by native tissue (tissue area fraction), yielding 0.136 for softer vs. 0.062 for stiffer hydrogels. Including soluble FGF-2 and PDGF-BB improved these responses to 0.164 and 0.089, respectively. Softer gels exhibited greater vascularization with 8.6 microvessels mm-2 compared to stiffer gels at 2.4 microvessels mm-2. Growth factors improved this to 11.2 and 4.9 microvessels mm-2, respectively. Softer hydrogels tended to display more sustained responses, promoting neovascularization and tissue integration in synthetic scaffolds.
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Affiliation(s)
- Ryan M Schweller
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA
| | - Zi Jun Wu
- Kenan Plastic Surgery Research Labs, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Bruce Klitzman
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA.,Kenan Plastic Surgery Research Labs, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Jennifer L West
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA.
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75
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Moore EM, Ying G, West JL. Macrophages Influence Vessel Formation in 3D Bioactive Hydrogels. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/adbi.201600021] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Erika M. Moore
- Department of Biomedical Engineering Duke University 101 Science Drive Campus Box 90281 Durham NC 27708‐0281 USA
| | - Grace Ying
- Department of Biomedical Engineering Duke University 101 Science Drive Campus Box 90281 Durham NC 27708‐0281 USA
| | - Jennifer L. West
- Department of Biomedical Engineering Duke University 101 Science Drive Campus Box 90281 Durham NC 27708‐0281 USA
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76
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Nishiguchi A, Singh S, Wessling M, Kirkpatrick CJ, Möller M. Basement Membrane Mimics of Biofunctionalized Nanofibers for a Bipolar-Cultured Human Primary Alveolar-Capillary Barrier Model. Biomacromolecules 2017; 18:719-727. [PMID: 28100051 DOI: 10.1021/acs.biomac.6b01509] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In vitro reconstruction of an alveolar barrier for modeling normal lung functions and pathological events serve as reproducible, high-throughput pharmaceutical platforms for drug discovery, diagnosis, and regenerative medicine. Despite much effort, the reconstruction of organ-level alveolar barrier functions has failed due to the lack of structural similarity to the natural basement membrane, functionalization with specific ligands for alveolar cell function, the use of primary cells and biodegradability. Here we report a bipolar cultured alveolar-capillary barrier model of human primary cells supported by a basement membrane mimics of fully synthetic bifunctional nanofibers. One-step electrospinning process using a bioresorbable polyester and multifunctional star-shaped polyethylene glycols (sPEG) enables the fabrication of an ultrathin nanofiber mesh with interconnected pores. The nanofiber mesh possessed mechanical stability against cyclic expansion as seen in the lung in vivo. The sPEGs as an additive provide biofunctionality to fibers through the conjugation of peptide to the nanofibers and hydrophilization to prevent unspecific protein adsorption. Biofunctionalized nanofiber meshes facilitated bipolar cultivation of endothelial and epithelial cells with fundamental alveolar functionality and showed higher permeability for molecules compared to microporous films. This nanofiber mesh for a bipolar cultured barrier have the potential to promote growth of an organ-level barrier model for modeling pathological conditions and evaluating drug efficacy, environmental pollutants, and nanotoxicology.
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Affiliation(s)
- Akihiro Nishiguchi
- DWI - Leibniz-Institute for Interactive Materials , Forckenbeckstrasse 50, D-52056, Aachen, Germany
| | - Smriti Singh
- DWI - Leibniz-Institute for Interactive Materials , Forckenbeckstrasse 50, D-52056, Aachen, Germany
| | - Matthias Wessling
- DWI - Leibniz-Institute for Interactive Materials , Forckenbeckstrasse 50, D-52056, Aachen, Germany
| | - Charles J Kirkpatrick
- Institute of Pathology, University Medical Center, Johannes Gutenberg University , Langenbeckstrasse 1, D-55101, Mainz, Germany
| | - Martin Möller
- DWI - Leibniz-Institute for Interactive Materials , Forckenbeckstrasse 50, D-52056, Aachen, Germany.,Institute of Technical and Macromolecular Chemistry, RWTH Aachen University , Worringerweg 2, 52074, Aachen, Germany
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77
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Munisso MC, Yamaoka T. Novel peptides for small-caliber graft functionalization selected by a phage display of endothelial-positive/platelet-negative combined selection. J Mater Chem B 2017; 5:9354-9364. [DOI: 10.1039/c7tb02652h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A new protocol to identify peptides with EPCs high affinity and at the same time the ability to suppress the interaction with platelets was presented.
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Affiliation(s)
- Maria Chiara Munisso
- Department of Biomedical Engineering
- National Cerebral and Cardiovascular Center Research Institute
- Suita
- Japan
| | - Tetsuji Yamaoka
- Department of Biomedical Engineering
- National Cerebral and Cardiovascular Center Research Institute
- Suita
- Japan
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78
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Silva LPD, Pirraco RP, Santos TC, Novoa-Carballal R, Cerqueira MT, Reis RL, Correlo VM, Marques AP. Neovascularization Induced by the Hyaluronic Acid-Based Spongy-Like Hydrogels Degradation Products. ACS APPLIED MATERIALS & INTERFACES 2016; 8:33464-33474. [PMID: 27960396 DOI: 10.1021/acsami.6b11684] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Neovascularization has been a major challenge in many tissue regeneration strategies. Hyaluronic acid (HA) of 3-25 disaccharides is known to be angiogenic due to its interaction with endothelial cell receptors. This effect has been explored with HA-based structures but a transitory response is observed due to HA burst biodegradation. Herein we developed gellan gum (GG)-HA spongy-like hydrogels from semi-interpenetrating network hydrogels with different HA amounts. Enzymatic degradation was more evident in the GG-HA with high HA amount due to their lower mechanical stability, also resulting from the degradation itself, which facilitated the access of the enzyme to the HA in the bulk. GG-HA spongy-like hydrogels hyaluronidase-mediated degradation lead to the release of HA oligosaccharides of different amounts and sizes in a HA content-dependent manner which promoted in vitro proliferation of human umbilical cord vein endothelial cells (HUVECs) but not their migration. Although no effect was observed in human dermal microvascular endothelial cells (hDMECs) in vitro, the implantation of GG-HA spongy-like hydrogels in an ischemic hind limb mice model promoted neovascularization in a material-dependent manner, consistent with the in vitro degradation profile. Overall, GG-HA spongy-like hydrogels with a sustained release of HA oligomers are valuable options to improve tissue vascularization, a critical issue in several applications in the tissue engineering and regenerative medicine field.
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Affiliation(s)
- Lucília P da Silva
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark - Parque da Ciência e Tecnologia, 4805-017 Barco, Taipas, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory , Braga/Guimarães, Portugal
| | - Rogério P Pirraco
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark - Parque da Ciência e Tecnologia, 4805-017 Barco, Taipas, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory , Braga/Guimarães, Portugal
| | - Tírcia C Santos
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark - Parque da Ciência e Tecnologia, 4805-017 Barco, Taipas, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory , Braga/Guimarães, Portugal
| | - Ramon Novoa-Carballal
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark - Parque da Ciência e Tecnologia, 4805-017 Barco, Taipas, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory , Braga/Guimarães, Portugal
| | - Mariana T Cerqueira
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark - Parque da Ciência e Tecnologia, 4805-017 Barco, Taipas, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory , Braga/Guimarães, Portugal
| | - Rui L Reis
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark - Parque da Ciência e Tecnologia, 4805-017 Barco, Taipas, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory , Braga/Guimarães, Portugal
| | - Vitor M Correlo
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark - Parque da Ciência e Tecnologia, 4805-017 Barco, Taipas, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory , Braga/Guimarães, Portugal
| | - Alexandra P Marques
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark - Parque da Ciência e Tecnologia, 4805-017 Barco, Taipas, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory , Braga/Guimarães, Portugal
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79
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Belair DG, Schwartz MP, Knudsen T, Murphy WL. Human iPSC-derived endothelial cell sprouting assay in synthetic hydrogel arrays. Acta Biomater 2016; 39:12-24. [PMID: 27181878 PMCID: PMC5228278 DOI: 10.1016/j.actbio.2016.05.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 05/10/2016] [Accepted: 05/11/2016] [Indexed: 01/09/2023]
Abstract
UNLABELLED Activation of vascular endothelial cells (ECs) by growth factors initiates a cascade of events during angiogenesis in vivo consisting of EC tip cell selection, sprout formation, EC stalk cell proliferation, and ultimately vascular stabilization by support cells. Although EC functional assays can recapitulate one or more aspects of angiogenesis in vitro, they are often limited by undefined substrates and lack of dependence on key angiogenic signaling axes. Here, we designed and characterized a chemically-defined model of endothelial sprouting behavior in vitro using human induced pluripotent stem cell-derived endothelial cells (iPSC-ECs). We rapidly encapsulated iPSC-ECs at high density in poly(ethylene glycol) (PEG) hydrogel spheres using thiol-ene chemistry and subsequently encapsulated cell-dense hydrogel spheres in a cell-free hydrogel layer. The hydrogel sprouting array supported pro-angiogenic phenotype of iPSC-ECs and supported growth factor-dependent proliferation and sprouting behavior. iPSC-ECs in the sprouting model responded appropriately to several reference pharmacological angiogenesis inhibitors of vascular endothelial growth factor, NF-κB, matrix metalloproteinase-2/9, protein kinase activity, and β-tubulin, which confirms their functional role in endothelial sprouting. A blinded screen of 38 putative vascular disrupting compounds from the US Environmental Protection Agency's ToxCast library identified six compounds that inhibited iPSC-EC sprouting and five compounds that were overtly cytotoxic to iPSC-ECs at a single concentration. The chemically-defined iPSC-EC sprouting model (iSM) is thus amenable to enhanced-throughput screening of small molecular libraries for effects on angiogenic sprouting and iPSC-EC toxicity assessment. STATEMENT OF SIGNIFICANCE Angiogenesis assays that are commonly used for drug screening and toxicity assessment applications typically utilize natural substrates like Matrigel(TM) that are difficult to spatially pattern, costly, ill-defined, and may exhibit lot-to-lot variability. Herein, we describe a novel angiogenic sprouting assay using chemically-defined, bioinert poly(ethylene glycol) hydrogels functionalized with biomimetic peptides to promote cell attachment and degradation in a reproducible format that may mitigate the need for natural substrates. The quantitative assay of angiogenic sprouting here enables precise control over the initial conditions and can be formulated into arrays for screening. The sprouting assay here was dependent on key angiogenic signaling axes in a screen of angiogenesis inhibitors and a blinded screen of putative vascular disrupting compounds from the US-EPA.
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Affiliation(s)
- David G Belair
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Michael P Schwartz
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Thomas Knudsen
- National Center for Computational Toxicology, Office of Research and Development, US Environmental Protection Agency, Research Triangle Park, NC, USA
| | - William L Murphy
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA; Material Science Program, University of Wisconsin-Madison, Madison, WI, USA; Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA.
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Abstract
Cardiovascular tissue engineering offers the promise of biologically based repair of injured and damaged blood vessels, valves, and cardiac tissue. Major advances in cardiovascular tissue engineering over the past few years involve improved methods to promote the establishment and differentiation of induced pluripotent stem cells (iPSCs), scaffolds from decellularized tissue that may produce more highly differentiated tissues and advance clinical translation, improved methods to promote vascularization, and novel
in vitro microphysiological systems to model normal and diseased tissue function. iPSC technology holds great promise, but robust methods are needed to further promote differentiation. Differentiation can be further enhanced with chemical, electrical, or mechanical stimuli.
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Affiliation(s)
- George A Truskey
- Department of Biochemical Engineering, Duke University, Durham, NC, USA
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81
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Parvizi M, Bolhuis-Versteeg LA, Poot AA, Harmsen MC. Efficient generation of smooth muscle cells from adipose-derived stromal cells by 3D mechanical stimulation can substitute the use of growth factors in vascular tissue engineering. Biotechnol J 2016; 11:932-44. [DOI: 10.1002/biot.201500519] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 12/24/2015] [Accepted: 03/09/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Mojtaba Parvizi
- University of Groningen; University Medical Center Groningen, Department of Pathology and Medical Biology; Groningen the Netherlands
| | | | - André A. Poot
- Biomaterials Science and Technology; University of Twente; Enschede the Netherlands
| | - Martin C. Harmsen
- University of Groningen; University Medical Center Groningen, Department of Pathology and Medical Biology; Groningen the Netherlands
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82
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3D extracellular matrix interactions modulate tumour cell growth, invasion and angiogenesis in engineered tumour microenvironments. Acta Biomater 2016; 36:73-85. [PMID: 26971667 DOI: 10.1016/j.actbio.2016.03.017] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Revised: 02/23/2016] [Accepted: 03/09/2016] [Indexed: 12/15/2022]
Abstract
UNLABELLED Interactions between tumour cells and extracellular matrix proteins of the tumour microenvironment play crucial roles in cancer progression. So far, however, there are only a few experimental platforms available that allow us to study these interactions systematically in a mechanically defined three-dimensional (3D) context. Here, we have studied the effect of integrin binding motifs found within common extracellular matrix (ECM) proteins on 3D breast (MCF-7) and prostate (PC-3, LNCaP) cancer cell cultures, and co-cultures with endothelial and mesenchymal stromal cells. For this purpose, matrix metalloproteinase-degradable biohybrid poly(ethylene) glycol-heparin hydrogels were decorated with the peptide motifs RGD, GFOGER (collagen I), or IKVAV (laminin-111). Over 14days, cancer spheroids of 100-200μm formed. While the morphology of poorly invasive MCF-7 and LNCaP cells was not modulated by any of the peptide motifs, the aggressive PC-3 cells exhibited an invasive morphology when cultured in hydrogels comprising IKVAV and GFOGER motifs compared to RGD motifs or nonfunctionalised controls. PC-3 (but not MCF-7 and LNCaP) cell growth and endothelial cell infiltration were also significantly enhanced in IKVAV and GFOGER presenting gels. Taken together, we have established a 3D culture model that allows for dissecting the effect of biochemical cues on processes relevant to early cancer progression. These findings provide a basis for more mechanistic studies that may further advance our understanding of how ECM modulates cancer cell invasion and how to ultimately interfere with this process. STATEMENT OF SIGNIFICANCE Threedimensional in vitro cancer models have generated great interest over the past decade. However, most models are not suitable to systematically study the effects of environmental cues on cancer development and progression. To overcome this limitation, we have developed an innovative hydrogel platform to study the interactions between breast and prostate cancer cells and extracellular matrix ligands relevant to the tumour microenvironment. Our results show that hydrogels with laminin- and collagen-derived adhesive peptides induce a malignant phenotype in a cell-line specific manner. Thus, we have identified a method to control the incorporation of biochemical cues within a three dimensional culture model and anticipate that it will help us in better understanding the effects of the tumour microenvironment on cancer progression.
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83
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Kwag HR, Serbo JV, Korangath P, Sukumar S, Romer LH, Gracias DH. A Self-Folding Hydrogel In Vitro Model for Ductal Carcinoma. Tissue Eng Part C Methods 2016; 22:398-407. [PMID: 26831041 DOI: 10.1089/ten.tec.2015.0442] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
A significant challenge in oncology is the need to develop in vitro models that accurately mimic the complex microenvironment within and around normal and diseased tissues. Here, we describe a self-folding approach to create curved hydrogel microstructures that more accurately mimic the geometry of ducts and acini within the mammary glands, as compared to existing three-dimensional block-like models or flat dishes. The microstructures are composed of photopatterned bilayers of poly (ethylene glycol) diacrylate (PEGDA), a hydrogel widely used in tissue engineering. The PEGDA bilayers of dissimilar molecular weights spontaneously curve when released from the underlying substrate due to differential swelling ratios. The photopatterns can be altered via AutoCAD-designed photomasks so that a variety of ductal and acinar mimetic structures can be mass-produced. In addition, by co-polymerizing methacrylated gelatin (methagel) with PEGDA, microstructures with increased cell adherence are synthesized. Biocompatibility and versatility of our approach is highlighted by culturing either SUM159 cells, which were seeded postfabrication, or MDA-MB-231 cells, which were encapsulated in hydrogels; cell viability is verified over 9 and 15 days, respectively. We believe that self-folding processes and associated tubular, curved, and folded constructs like the ones demonstrated here can facilitate the design of more accurate in vitro models for investigating ductal carcinoma.
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Affiliation(s)
- Hye Rin Kwag
- 1 Department of Chemical and Biomolecular Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Janna V Serbo
- 2 Department of Biomedical Engineering, Johns Hopkins University School of Medicine , Baltimore, Maryland
| | - Preethi Korangath
- 3 Department of Oncology, Johns Hopkins University School of Medicine , Baltimore, Maryland
| | - Saraswati Sukumar
- 3 Department of Oncology, Johns Hopkins University School of Medicine , Baltimore, Maryland
| | - Lewis H Romer
- 2 Department of Biomedical Engineering, Johns Hopkins University School of Medicine , Baltimore, Maryland.,4 Department of Anesthesiology and Critical Care Medicine, Cell Biology, Pediatrics, Center for Cell Dynamics, Johns Hopkins University School of Medicine , Baltimore, Maryland
| | - David H Gracias
- 1 Department of Chemical and Biomolecular Engineering, Johns Hopkins University , Baltimore, Maryland.,5 Department of Materials Science and Engineering, Johns Hopkins University , Baltimore, Maryland
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84
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Xuan M, Wang S, Liu X, He Y, Li Y, Zhang Y. Proteins of the corneal stroma: importance in visual function. Cell Tissue Res 2016; 364:9-16. [DOI: 10.1007/s00441-016-2372-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 01/27/2016] [Indexed: 12/13/2022]
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85
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Blache U, Metzger S, Vallmajo-Martin Q, Martin I, Djonov V, Ehrbar M. Dual Role of Mesenchymal Stem Cells Allows for Microvascularized Bone Tissue-Like Environments in PEG Hydrogels. Adv Healthc Mater 2016; 5:489-98. [PMID: 26693678 DOI: 10.1002/adhm.201500795] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Indexed: 12/19/2022]
Abstract
In vitro engineered tissues which recapitulate functional and morphological properties of bone marrow and bone tissue will be desirable to study bone regeneration under fully controlled conditions. Among the key players in the initial phase of bone regeneration are mesenchymal stem cells (MSCs) and endothelial cells (ECs) that are in close contact in many tissues. Additionally, the generation of tissue constructs for in vivo transplantations has included the use of ECs since insufficient vascularization is one of the bottlenecks in (bone) tissue engineering. Here, 3D cocultures of human bone marrow derived MSCs (hBM-MSCs) and human umbilical vein endothelial cells (HUVECs) in synthetic biomimetic poly(ethylene glycol) (PEG)-based matrices are directed toward vascularized bone mimicking tissue constructs. In this environment, bone morphogenetic protein-2 (BMP-2) or fibroblast growth factor-2 (FGF-2) promotes the formation of vascular networks. However, while osteogenic differentiation is achieved with BMP-2, the treatment with FGF-2 suppressed osteogenic differentiation. Thus, this study shows that cocultures of hBM-MSCs and HUVECs in biological inert PEG matrices can be directed toward bone and bone marrow-like 3D tissue constructs.
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Affiliation(s)
- Ulrich Blache
- Department of Obstetrics, University and University Hospital Zurich, Schmelzbergstrasse 12, 8091, Zurich, Switzerland
| | - Stéphanie Metzger
- Department of Obstetrics, University and University Hospital Zurich, Schmelzbergstrasse 12, 8091, Zurich, Switzerland
| | - Queralt Vallmajo-Martin
- Department of Obstetrics, University and University Hospital Zurich, Schmelzbergstrasse 12, 8091, Zurich, Switzerland
| | - Ivan Martin
- Department of Biomedicine and Department of Surgery, University Hospital Basel, Hebelstrasse 20, 4031, Basel, Switzerland
| | - Valentin Djonov
- Institute of Anatomy, University of Bern, Baltzerstrasse 2, 3012, Bern, Switzerland
| | - Martin Ehrbar
- Department of Obstetrics, University and University Hospital Zurich, Schmelzbergstrasse 12, 8091, Zurich, Switzerland
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86
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87
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Lesman A, Rosenfeld D, Landau S, Levenberg S. Mechanical regulation of vascular network formation in engineered matrices. Adv Drug Deliv Rev 2016. [PMID: 26212159 DOI: 10.1016/j.addr.2015.07.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Generation of vessel networks within engineered tissues is critical for integration and perfusion of the implanted tissue in vivo. The effect of mechanical cues in guiding and stabilizing the vessels has begun to attract marked interest. This review surveys the impact of mechanical cues on formation of vascular networks in 2D and 3D gel matrices. We give less emphasis to regulation of endothelial monolayers and single endothelial cells. Several vascularization models have consistently found that the stress generated in the gel, and encountered by embedded cells, control various aspects of vascular network formation, including sprouting, branching, alignment, and vessel maturation. This internal stress is generated by cell contractile forces, and is balanced by gel stiffness and boundary constrains imposed on the gel. Actin and myosin II are key molecular players in controlling initiation of vessel sprouting and branching morphogenesis. Additionally, the impact of external mechanical cues on tissue vascularization, and studies supporting the notion that mechanical forces regulate vascularization in the live animal are reviewed.
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Affiliation(s)
- Ayelet Lesman
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel; School of Mechanical Engineering, Faculty of Engineering, Tel-Aviv University, Israel
| | - Dekel Rosenfeld
- Department of Biomedical Engineering, Technion-Israel Institute of Technology, Israel
| | - Shira Landau
- Department of Biomedical Engineering, Technion-Israel Institute of Technology, Israel
| | - Shulamit Levenberg
- Department of Biomedical Engineering, Technion-Israel Institute of Technology, Israel.
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88
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Endothelial Progenitor Cell Migration-Enhancing Factors in the Secretome of Placental-Derived Mesenchymal Stem Cells. Stem Cells Int 2016; 2016:2514326. [PMID: 26880942 PMCID: PMC4736766 DOI: 10.1155/2016/2514326] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 10/13/2015] [Accepted: 10/25/2015] [Indexed: 01/12/2023] Open
Abstract
Therapeutic potentials of mesenchymal stem cells (MSCs) depend largely on their ability to secrete cytokines or factors that modulate immune response, enhance cell survival, and induce neovascularization in the target tissues. We studied the secretome profile of gestational tissue-derived MSCs and their effects on functions of endothelial progenitor cells (EPCs), another angiogenic cell type that plays an important role during the neovascularization. MSCs derived from placental tissues (PL-MSCs) significantly enhanced EPC migration while BM-MSCs, which are the standard source of MSCs for various clinical applications, did not. By using protein fractionation and mass spectrometry analysis, we identified several novel candidates for EPC migration enhancing factor in PL-MSCs secretome that could be used to enhance neovascularization in the injured/ischemic tissues. We recommend that the strategy developed in our study could be used to systematically identify therapeutically useful molecules in the secretomes of other MSC sources for the clinical applications.
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89
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Iorio V, Troughton LD, Hamill KJ. Laminins: Roles and Utility in Wound Repair. Adv Wound Care (New Rochelle) 2015; 4:250-263. [PMID: 25945287 DOI: 10.1089/wound.2014.0533] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 04/27/2014] [Indexed: 01/13/2023] Open
Abstract
Significance: Laminins are complex extracellular macromolecules that are major players in the control of a variety of core cell processes, including regulating rates of cell proliferation, differentiation, adhesion, and migration. Laminins, and related extracellular matrix components, have essential roles in tissue homeostasis; however, during wound healing, the same proteins are critical players in re-epithelialization and angiogenesis. Understanding how these proteins influence cell behavior in these different conditions holds great potential in identifying new strategies to enhance normal wound closure or to treat chronic/nonhealing wounds. Recent Advances: Laminin-derived bioactive peptides and, more recently, laminin-peptide conjugated scaffolds, have been designed to improve tissue regeneration after injuries. These peptides have been shown to be effective in decreasing inflammation and granulation tissue, and in promoting re-epithelialization, angiogenesis, and cell migration. Critical Issues: Although there is now a wealth of knowledge concerning laminin form and function, there are still areas of some controversy. These include the relative contribution of two laminin-based adhesive devices (focal contacts and hemidesmosomes) to the re-epithelialization process, the impact and implications of laminin proteolytic processing, and the importance of laminin polymer formation on cell behavior. In addition, the roles in wound healing of the laminin-related proteins, netrins, and LaNts are still to be fully defined. Future Directions: The future of laminin-based therapeutics potentially lies in the bioengineering of specific substrates to support laminin deposition for ex vivo expansion of autologous cells for graft formation and transplantation. Significant recent advances suggest that this goal is within sight.
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Affiliation(s)
- Valentina Iorio
- Department of Eye and Vision Science, Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, United Kingdom
| | - Lee D. Troughton
- Department of Eye and Vision Science, Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, United Kingdom
| | - Kevin J. Hamill
- Department of Eye and Vision Science, Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, United Kingdom
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90
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Rodell CB, Wade RJ, Purcell BP, Dusaj NN, Burdick JA. Selective Proteolytic Degradation of Guest–Host Assembled, Injectable Hyaluronic Acid Hydrogels. ACS Biomater Sci Eng 2015; 1:277-286. [DOI: 10.1021/ab5001673] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Christopher B. Rodell
- Department of Bioengineering, ‡Department of Materials Science and Engineering, and §Departments of
Chemistry and Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Ryan J. Wade
- Department of Bioengineering, ‡Department of Materials Science and Engineering, and §Departments of
Chemistry and Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Brendan P. Purcell
- Department of Bioengineering, ‡Department of Materials Science and Engineering, and §Departments of
Chemistry and Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Neville N. Dusaj
- Department of Bioengineering, ‡Department of Materials Science and Engineering, and §Departments of
Chemistry and Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jason A. Burdick
- Department of Bioengineering, ‡Department of Materials Science and Engineering, and §Departments of
Chemistry and Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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91
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Williams C, Budina E, Stoppel WL, Sullivan KE, Emani S, Emani SM, Black LD. Cardiac extracellular matrix-fibrin hybrid scaffolds with tunable properties for cardiovascular tissue engineering. Acta Biomater 2015; 14:84-95. [PMID: 25463503 PMCID: PMC4308538 DOI: 10.1016/j.actbio.2014.11.035] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Revised: 11/15/2014] [Accepted: 11/18/2014] [Indexed: 12/23/2022]
Abstract
Solubilized cardiac extracellular matrix (ECM) is being developed as an injectable therapeutic that offers promise for promoting cardiac repair. However, the ECM alone forms a hydrogel that is very soft compared to the native myocardium. As both the stiffness and composition of the ECM are important in regulating cell behavior and can have complex synergistic effects, we sought to develop an ECM-based scaffold with tunable biochemical and mechanical properties. We used solubilized rat cardiac ECM from two developmental stages (neonatal, adult) combined with fibrin hydrogels that were cross-linked with transglutaminase. We show that ECM was retained within the gels and that the Young's modulus could be tuned to span the range of the developing and mature heart. C-kit+ cardiovascular progenitor cells from pediatric patients with congenital heart defects were seeded into the hybrid gels. Both the elastic modulus and composition of the scaffolds impacted the expression of endothelial and smooth muscle cell genes. Furthermore, we demonstrate that the hybrid gels are injectable, and thus have potential for minimally invasive therapies. ECM-fibrin hybrid scaffolds offer new opportunities for exploiting the effects of both composition and mechanical properties in directing cell behavior for tissue engineering.
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Affiliation(s)
- Corin Williams
- Department of Biomedical Engineering, Tufts University, 4 Colby St, Medford, MA 02155, USA
| | - Erica Budina
- Department of Biomedical Engineering, Tufts University, 4 Colby St, Medford, MA 02155, USA
| | - Whitney L Stoppel
- Department of Biomedical Engineering, Tufts University, 4 Colby St, Medford, MA 02155, USA
| | - Kelly E Sullivan
- Department of Biomedical Engineering, Tufts University, 4 Colby St, Medford, MA 02155, USA
| | - Sirisha Emani
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Ave, Boston, MA 02115, USA
| | - Sitaram M Emani
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Ave, Boston, MA 02115, USA
| | - Lauren D Black
- Department of Biomedical Engineering, Tufts University, 4 Colby St, Medford, MA 02155, USA; Cellular, Molecular and Developmental Biology Program, Sackler School for Graduate Biomedical Sciences, Tufts University School of Medicine, 145 Harrison Ave, Boston, MA 02111, USA.
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92
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Fu A, Gwon K, Kim M, Tae G, Kornfield JA. Visible-Light-Initiated Thiol–Acrylate Photopolymerization of Heparin-Based Hydrogels. Biomacromolecules 2015; 16:497-506. [DOI: 10.1021/bm501543a] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Amy Fu
- Division
of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, United States
| | - Kihak Gwon
- School
of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Republic of Korea
| | - Mihye Kim
- School
of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Republic of Korea
| | - Giyoong Tae
- School
of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Republic of Korea
| | - Julia A. Kornfield
- Division
of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, United States
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93
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Nehilla BJ, Nataraj N, Gaborski TR, McGrath JL. Endothelial vacuolization induced by highly permeable silicon membranes. Acta Biomater 2014; 10:4670-4677. [PMID: 25072618 DOI: 10.1016/j.actbio.2014.07.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2014] [Revised: 06/14/2014] [Accepted: 07/18/2014] [Indexed: 11/24/2022]
Abstract
Assays for initiating, controlling and studying endothelial cell behavior and blood vessel formation have applications in developmental biology, cancer and tissue engineering. In vitro vasculogenesis models typically combine complex three-dimensional gels of extracellular matrix proteins with other stimuli like growth factor supplements. Biomaterials with unique micro- and nanoscale features may provide simpler substrates to study endothelial cell morphogenesis. In this work, patterns of nanoporous, nanothin silicon membranes (porous nanocrystalline silicon, or pnc-Si) are fabricated to control the permeability of an endothelial cell culture substrate. Permeability on the basal surface of primary and immortalized endothelial cells causes vacuole formation and endothelial organization into capillary-like structures. This phenomenon is repeatable, robust and controlled entirely by patterns of free-standing, highly permeable pnc-Si membranes. Pnc-Si is a new biomaterial with precisely defined micro- and nanoscale features that can be used as a unique in vitro platform to study endothelial cell behavior and vasculogenesis.
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